I have a 120, I mostly keep it around for using with my band at rehearsals/as a backup. It can't get interesting upper harmonics like you can get out of something higher quality like a Recto for example, it always sounds a bit duller up there and less 3d for lack of a better term. It has some kind of plastic-y nature to the tone that is a little weird, doesn't sound great to me in isolation (just IMO) but I've found it to work well for me in a band situation or when double tracked in a recording. The main plus points for my use are: quick to dial in, and not too picky with cabs (good for cab share situations). A guy here posted a comparison with a 6505 and a Hesu recently, I felt like it was a good representation of the Ironheart head as I know it. Cuts pretty well, pretty bitey, and quite dry. IMO it has enough gain but benefits from a tubescreamer to give some more saturation. Definitely its own sound but not for everyone. If you like the clips you're hearing you'll probably love it.
I haven't played the studio but on paper it looks like a cool product feature wise. I think Fred Brum is/was using one of these, same for Chimp Spanner.